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AssigneeJsp Corporation
InventorsTomoo Tokiwa, Masahiro Gomibuchi, Kazunobu Sato
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The present invention provides a foamed molded article production method that can produce polycarbonate resin foamed blow-molded articles, etc. Which are good over a wide range of densities. The present invention is a method for producing a foamed molded article including extruding a foamable molten resin, formed by kneading a polycarbonate resin, a polyester resin in an amount of 5 to 100 parts by weight per 100 parts by weight of the polycarbonate resin and a foaming agent, from a die to obtain a foamed parison, and molding the foamed parison in a softened state in a mold. The polyester resin is a polyester copolymer containing diol component units, 10 to 80 mol % of which are glycol component units each having a cyclic ether structure, and dicarboxylic acid component units.
A method for producing a polycarbonate resin foamed molded article comprising kneading a polycarbonate resin (A), a polyester resin (B) in an amount of 5 to 100 parts by weight per 100 parts by weight of the polycarbonate resin (A) and a foaming agent to obtain a foamable molten resin, extruding the foamable molten resin to obtain a foamed parison, and molding the foamed parison, which is in a softened state, in a mold, wherein the polyester resin (B) is a polyester copolymer containing diol component units, 10 to 80 mol % of which are glycol component units each having a cyclic ether structure, and dicarboxylic acid component units.
Dependencies are inferred from the claim text.